Shuttle embroidering-machine.



R. ZAHN DECD. A. RIETZSCH. Aumimsmnoa.

SHUTTLE EMBROIDERING MACHINE.

APPLICATION FILED JAN.25. 1913.

Patented May 4, 1915.

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To all whom it may concern:

Be it known that 1, Bear ZAHN, a subect of the German Emperor, residing at lauen, in Vogtland, in the Kingdom of Saxony, Germany, have invented certain new and useful improvements in Shuttle Emhroidering-Machines, of which the followin is a specification.

Wit shuttle emhroidering machines of the latest type, in which the shuttles have their filling openings arranged sidewise and bear on the raceway with one of their solid surfaces, it is obvious, that in order to positively guide the shuttles, the borders or projecting bars at the sides of the raceway must snugl bear against the sides of the shuttle, which, however, with the hitherto used structure of the shuttle is not possible, as there must be suficicnt free space around the shuttle, to accommodate the thread of the loop, which often is quite thick and throu h which the shuttle must sli through. This ree space, however, gives t e shuttle so much freedom oflsteral movement that during its operation instead of traveling in. a strar ht rectilinear line it swings to and fro an consequently its pointed end misses e thread through which it has to ass. The result is that a stitch is lost, and it this happens frequently the work is spoiled. Obviously with the large size embroidering machines, now commonly in use, and in which about a thousand needles are simultaneously in operation, the constant missin ct stitches is unovoidable when the hit erto used construction is ad hored to.

The object of my invention is to remedy this evil, which it tuzconiplish by the insprovement constituting the subject of this invention.

In the accompanying; drawing similar resierence charsctsrs enote correspondin parts and Figure l is a perspective view ot my new shuttle and Fig. Qis a rear view of two sh htly inclined racewa s for the shuttles; Fig. 3 is a side View 0 a raceway and shuttle and Fig. t a cross section on line 2-2 of Fig. 2.

ranged s1dewise,so that when in operative posltion, this opening faces one of the guide plates, as a The shuttle is also so coustructed, that one of its solid surfaces, as 6 serves as a hearing surface, in other words the shuttle bears on the raceway, not'with the narrow edges surrounding the filling opening, hut with a solid surface, which is formed as a straight or plane surface. With such structure of the shuttle and such. arrangement thereof in the raceway, it has been ound that the shuttle, durin its tociprocatory movement, has the ten ency to swing sidewise, because of the free space around the shuttle, which necessarily must be provided to accommodate the thread of the loop, which often is quite thick and through which the shuttle is adapted to slip through. Such tendency to swing sidewise, results frequently in the shuttle point missing to pass throughthe loop and conseuently in the loss of a stitch. To obviate t is drawback, the rounded surfaceof the shuttle, which ftces the longitudinally eutendin and. pro'ecting har a has a longitudina 1y exten ing undercut portion 7), which forms a straight or plane edge, adapted to snugi hear on the projecting her or plate a an in coiiperetion with the latter to term a positive rectilinear guide for the shuttle.

What ll claim and desire to secure by Lettors Patent is:

l. The cnmhinstionwitha shuttle raceway, having a longitudinal guide member, at a. shuttle hsvinits lingopcning' in one side,- curved surraoe on its opposite side which surtace is undercut at its lower edge and forms it flat lcngitndinsl shoulder or adapted to cooperate with said ide memher and to form n n'tire rccti' car guide for the shuttle.

2. A shutfle having a flat soiii bottom, a in testimony whereaf I afiix my signafilling opening in one side, a CUl' 'Qd surface time in prssence of two witnesses. in she opposite side which surface is under- ROBERT ZAHN. cut at its lower edge and forms & fiat longi- Witnesses: 5 tudiml shoulcier m" edge sari/ mg as a guide JAMES H. Gosem,

1%? said shuttle. MAX D. ORDMANN. 

